from PIL import Image, ImageDraw, ImageFilter
import cv2
import numpy as np

class WatermarkRemover:
    def __init__(self, image_path):
        self.image = Image.open(image_path)
        
    def remove_text_watermark(self):
        """去除文字水印"""
        draw = ImageDraw.Draw(self.image)
        watermark_coords = self._detect_watermark_area()
        draw.rectangle(watermark_coords, fill='white')
        return self.image
        
    def _detect_watermark_area(self):
        """使用OpenCV检测水印区域"""
        img_array = np.array(self.image)
        gray = cv2.cvtColor(img_array, cv2.COLOR_BGR2GRAY)
        edges = cv2.CLahe.create().apply(gray)
        # 水印区域检测算法...
        return (x1, y1, x2, y2)